Fossil Fuels + Dependence = Security Risks?

What do military officers think about the United States’ reliance on oil? One group of retired brass concluded that it threatens economic stability and national security. Vice Admiral Dennis McGinn (retired) says the 12 people studied scientific data and energy models for more than a year and concluded that the Pentagon should clearly integrate energy and climate change into its strategy and operations. What's that mean?

This program was recorded in front of a live audience at the Commonwealth Club of California on March 29, 2010.